Internal-combustion engine



June 5, 1928. 1,672,031

F. HUBER INTERNAL COMBUSTION ENGINE Filed Nov. 13, 924

i Hu 'w 7 mm wa m v WY Patented June 5, 1928.

UNITED STATES PATENT OFFICE,

.I'RITZ flUBER Ol' IANNHEIM, GERMANY, ASSIGNOR, BY MESN'E ASSIGNMENTS, T HEINRICH LANZ, AKTIENGESELLSCHAFT, OI MANNHEIM, BADEN, GERMANY, A.

CORPORATION OF GERMANY.

mrnanan-comnus'rxou ENGiNE.

, Application filed November 13, 1024, Serial No. 749,590, and in Germany December 85, 1888.

The present invention relates to internal combustion engines, and the object thereof is to simplify and otherwise improve the construction of such" engines," to thereby facilitate not only their manufacture, on a mass or quantity basis, but also their shipment and installation in the respective power stations for which they are intended, namely, motor vehicles, motor plows, motor boats, etc.

To this end the invention consists, essentially, in combining in a single unitary structure allthe main parts of a complete plant,

such as the engine or motor, the reservoir for the cooling water, and the fuel tank, thus making possible the casting of these parts in a single piece and so avoiding the necessity of finishing, shipping, and setting up a number of separate elements. I

A further feature consists in so assembling andarranging the several parts of theunitary plant that not only will they be compactly grouped in suitable relationship for the satisfactory performance of their respective functions but the surfaces of the casting which require machining, the flanges of the shut-ofi openings for the usual covers and for the attachment of the necessary auxiliary parts, will all lie in plane surfaces, in one plane or in planes at an angle to each other,

thus making it possible to finish them in one or a few operat1onsan arrangemenmwhich in fact ermits the-placing of a large number of t e unitary castings on a work table and the finishing of the flange surfaces of as all of them in a single operation, first on one side and then, after turning them over, on another side,

The invention also comprises .theadditional novelfeatures hereinafter described to and more particularly pointed out in the ap pended claim. r

A motor plant illustrating one embodiment of the invention is shown, by way of example and not of limitation, in the accom- L5 panying drawings, in Fig. 1 in longitudinal vertical section, 1n Fig. 2 partly in end ele- ,vation and partly in section on the line 11 of Fig. 1, and in Figure 3 in section on the line 2-2 of Figure 1.

i0 Referring to the drawing, a is the motor cylinder, 6 is the crank-shaft casing, constructed as a crank casing scavenging pump, a is the cooling water reservoir or container, (1 is the fu'el tank, e is an air inlet passage to the scavenging airpump, and f is a chaml5 ber for the control gear. All of these parts or the walls thereof, are integrall united and=are cast in one piece. It will noted that-the cooling water reservoir is located immediately above the cylinder and extends over the ad oinin inner portion of the crankshaft casing an that the fuel tank is located over .the outer end of this casing and 1s separated from the coolingwater reservoir y the downwardly projecting air inlet passage to the crank-shaft casing and the scavenging pump; and it will be further noted that as the result of the assembling and arrangement of the several parts the casting, which is substantially rectangular in shape, can be conveniently finished since it is thus possible to locate the flanged surfaces, as shown, the plane surfaces of its sides and so finish those on each side at a single operation, or by assembling a number of the cast bodies on a work table to finish the surfaces on one side of all of them at the same timea feature especially favorable forquantit production. The surfaces which require nishing are the following: The cover flange a of the cylinder, the cover flanges c d and e of the water reservoir and of the fuel tank, and scaven ing air inlet passage, the flanges b d and f for the attachment respectively of a shut-off cover for the crank-shaft casing, a fuel filling support, and a cover 0 for the control gear chamber in which is mounted the control shaft, the cover flange of an opening for cleaning the cooling water reservoir, the

bearingcover flanges 6 on both sides of the crank-shaft casin in which covers is mounted the crank-s 'aft, and the cover flange g' of an opening to the exhaust cham ber g 95 The dome-shaped cover h of the cooling water reservoir, whichv is extended over and serves as a shut-ofl' for the scavenging air inlet passage, is also cast in one piece and provides, as integral parts thereof, a shutoff. and support a, for the exhaust chamber and the'exhaust pipe 71 and a shut-off su port for the scavenging air inlet pipe The cover is further provided with a'steam outlet pipe Z, which is set into-a boss in its upper wall, and with a threaded opening, for the screw cap m, through which to fill the cooling water reservoir.

The motor here illustrated is a motor of the incandescing head type, with incandescing head 1 attached to the cover flange of the cylinder. The invention, however, is in no 5 wa%limited to the use of such a motor.

hat I claim as new, and desire to secure by Letters Patent, is-

In an engine of the hot bulb and scavenging pump type,

a unitary rectangular cast- 10 ing having plane upper and end surfaces and which includes the cylinder, the crank case, and the cooling water reservoir, the latter being located over the cylinder and a por-. tion of the crank case, the balance of the portion over the crank case being the fuel reservoir, an air inlet for the scavenging DR. FRITZ HUBER 

